Search Results - "Stawarz, Lukasz"

Multiwavelength Variability Power Spectrum Analysis of the Blazars 3C 279 and PKS 1510–089 on Multiple Timescales by Goyal, Arti, Soida, Marian, Stawarz, Łukasz, Wiita, Paul J., Nilsson, Kari, Jorstad, Svetlana, Marscher, Alan P., Aller, Margo F., Aller, Hugh D., Lähteenmäki, Anne, Hovatta, Talvikki, Zoła, Staszek, Nalewajko, Krzysztof, Tornikoski, Merja, Tammi, Joni, Hodges, Mark, Kiehlmann, Sebastian, Readhead, Anthony C. S., Max-Moerbeck, Walter, Lindfors, Elina, Ramazani, Vandad Fallah, Reichart, D. E., Caton, D. B., Valverde, Janeth, Horan, Deirdre, Ojha, Roopesh, van Zyl, Pfesesani

“…Abstract We present the results of variability power spectral density (PSD) analysis using multiwavelength radio to GeV γ -ray light curves covering timescales…”
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DETECTING RELATIVISTIC X-RAY JETS IN HIGH-REDSHIFT QUASARS by McKeough, Kathryn, Siemiginowska, Aneta, Cheung, C. C., Stawarz, ukasz, Kashyap, Vinay L., Stein, Nathan, Stampoulis, Vasileios, Dyk, David A. van, Wardle, J. F. C., Lee, N. P., Harris, D. E., Schwartz, D. A., Donato, Davide, Maraschi, Laura, Tavecchio, Fabrizio

“…ABSTRACT We analyze Chandra X-ray images of a sample of 11 quasars that are known to contain kiloparsec scale radio jets. The sample consists of five…”
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Multiband optical flux density and polarization microvariability study of optically bright blazars by Pasierb, Magdalena, Goyal, Arti, Ostrowski, Michał, Stawarz, Łukasz, Wiita, Paul J, Gopal-Krishna, Larionov, Valeri M, Morozova, Daria A, Itoh, Ryosuke, Alicavus, Fahri, Erdem, Ahmet, Joshi, Santosh, Zola, Staszek, Borman, Georgy A, Grishina, Tatiana S, Kopatskaya, Evgenia N, Larionova, Elena G, Savchenko, Sergey S, Nikiforova, Anna A, Troitskaya, Yulia V, Troitsky, Ivan S, Akitaya, Hiroshi, Kawabata, Miho, Nakaoka, Tatsuya

“…ABSTRACT We present the results of flux density, spectral index, and polarization intra-night monitoring studies of a sample of eight optically bright blazars,…”
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POLARIMETRY AND THE HIGH-ENERGY EMISSION MECHANISMS IN QUASAR JETS: THE CASE OF PKS 1136–135 by Cara, Mihai, Perlman, Eric S, Uchiyama, Yasunobu, Cheung, Chi C, Coppi, Paolo S, Georganopoulos, Markos, Worrall, Diana M, Birkinshaw, Mark, Sparks, William B, Marshall, Herman L, Stawarz, Lukasz, Begelman, Mitchell C, O'Dea, Christopher P, Baum, Stefi A

“…Since the discovery of kiloparsec-scale X-ray emission from quasar jets, the physical processes responsible for their high-energy emission have been poorly…”
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Optical Polarization and Spectral Variability in the M87 Jet by Perlman, Eric S, Adams, Steven C, Cara, Mihai, Bourque, Matthew, Harris, D. E, Madrid, Juan P, Simons, Raymond C, Clausen-Brown, Eric, Cheung, C. C, Stawarz, Lukasz, Georganopoulos, Markos, Sparks, William B, Biretta, John A

“…During the last decade, M87's jet has been the site of an extraordinary variability event, with one knot (HST-1) increasing by over a factor 100 in brightness…”
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SUZAKU X-RAY FOLLOW-UP OBSERVATIONS OF SEVEN UNASSOCIATED FERMI-LAT GAMMA-RAY SOURCES AT HIGH GALACTIC LATITUDES by TAKAHASHI, Y, KATAOKA, J, COGNARD, I, NAKAMORI, T, MAEDA, K, MAKIYA, R, TOTANI, T, CHEUNG, C. C, STAWARZ, L, GUILLEMOT, L, FREIRE, P. C. C

“…We report on our second-year campaign of X-ray follow-up observations of unidentified Fermi Large Area Telescope (LAT) gamma -ray sources at high Galactic…”
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On the Momentum Diffusion of Radiating Ultrarelativistic Electrons in a Turbulent Magnetic Field by Stawarz, Łukasz, Petrosian, Vahe

“…Here we investigate some aspects of stochastic acceleration of ultrarelativistic electrons by magnetic turbulence. In particular, we discuss the steady state…”
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Jet contributions to the broad-band spectrum of Cyg X-1 in the hard state by Zdziarski, Andrzej A., Pjanka, Patryk, Sikora, Marek, Stawarz, Łukasz

“…We apply the jet model developed in the preceding paper of Zdziarski et al. to the hard-state emission spectra of Cyg X-1. We augment the model for the…”
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INVERSE COMPTON X-RAY EMISSION FROM TeV BLAZAR MRK 421 DURING A HISTORICAL LOW-FLUX STATE OBSERVED WITH NuSTAR by Kataoka, Jun, Stawarz, ukasz

“…ABSTRACT We report on the detection of excess hard X-ray emission from the TeV BL Lac object Mrk 421 during the historical low-flux state of the source in 2013…”
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Obscuring Environment and X-Ray Variability of Compact Symmetric Objects Unveiled with XMM-Newton and NuSTAR by Sobolewska, Małgosia, Siemiginowska, Aneta, Migliori, Giulia, Ostorero, Luisa, Stawarz, Łukasz, Guainazzi, Matteo

“…Abstract Compact symmetric objects (CSOs) show radio features such as jets, lobes, and hot spots, which are contained within their host galaxies, and likely…”
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A simple analytical model of magnetic jets by Zdziarski, Andrzej A, Stawarz, Łukasz, Sikora, Marek, Nalewajko, Krzysztof

“…ABSTRACT We propose a simple analytical jet model of magnetic jets, in which radially averaged profiles of main physical quantities are obtained based on…”
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Radio Emission of Nearby Early-type Galaxies in the Low and Very Low Radio Luminosity Range by Wójtowicz, Anna, Stawarz, Łukasz, Cheung, C. C., Werner, Norbert, Rudka, Dominik

“…Abstract We analyze radio continuum emission of early-type galaxies with dynamical measurements of central supermassive black hole (SMBH) masses and…”
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A Novel Method for Estimating the Ambient Medium Density Around Distant Radio Sources from Their Observed Radio Spectra by Wójtowicz, Anna, Stawarz, Łukasz, Machalski, Jerzy, Ostorero, Luisa

“…Abstract The dynamical evolution and radiative properties of luminous radio galaxies and quasars of the FR II type, are well understood. As a result, through…”
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Correlation between X-Ray and Radio Absorption in Compact Radio Galaxies by Ostorero, Luisa, Morganti, Raffaella, Diaferio, Antonaldo, Siemiginowska, Aneta, Stawarz, ukasz, Moderski, Rafal, Labiano, Alvaro

“…Compact radio galaxies with a GHz-peaked spectrum (GPS) and/or compact-symmetric-object (CSO) morphology (GPS/CSOs) are increasingly detected in the X-ray…”
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The effect of adiabatic losses on spectra of stationary jets and the origin of soft radio spectra of accreting black hole sources by Zdziarski, Andrzej A, Stawarz, Łukasz, Sikora, Marek

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The Impact of the Environment on the Early Stages of Radio Source Evolution by Sobolewska, Ma gosia, Siemiginowska, Aneta, Guainazzi, Matteo, Hardcastle, Martin, Migliori, Giulia, Ostorero, Luisa, Stawarz, ukasz

“…Compact symmetric objects (CSOs) show radio features such as jets, lobes, and hot spots that are contained within the central 1 kpc region of their host…”
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Radio Loudness of Active Galactic Nuclei: Observational Facts and Theoretical Implications by Sikora, Marek, Stawarz, Łukasz, Lasota, Jean-Pierre

“…We investigate how the total radio luminosity of AGN-powered radio sources depends on their accretion luminosity and the central black hole mass. Our studies…”
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On the Origin of the X-Ray Emission in Heavily Obscured Compact Radio Sources by Ł. Król, Dominika, Sobolewska, Małgosia, Stawarz, Łukasz, Siemiginowska, Aneta, Migliori, Giulia, Principe, Giacomo, Gurwell, Mark A.

“…Abstract X-ray continuum emission of active galactic nuclei (AGNs) may be reflected by circumnuclear dusty tori, producing prominent fluorescence iron lines at…”
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X-Ray Emission Properties of Large-Scale Jets, Hot Spots, and Lobes in Active Galactic Nuclei by Kataoka, Jun, Stawarz, Łukasz

“…We examine a systematic comparison of jet knots, hot spots, and radio lobes recently observed with Chandra and ASCA. This report discusses the origin of their…”
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Accretion Disk Model of Short-Timescale Intermittent Activity in Young Radio Sources by Czerny, Bożena, Siemiginowska, Aneta, Janiuk, Agnieszka, Nikiel-Wroczyński, Błażej, Stawarz, Łukasz

“…We associate the existence of short-lived compact radio sources with the intermittent activity of the central engine caused by a radiation pressure instability…”
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